- City / exchange
- Ontario
- Province / state
- California
- Country
- United States
- Carrier
- Cellco Partnership dba Verizon Wireless - CA
- Line type
- Likely mobile
- OCN
- 6006
- Status
- In Service
- Assigned
- 07/29/2025
- Number pooling
- Yes (block shared between carriers)
840-279 phone numbers
Ontario, California, United States · Cellco Partnership dba Verizon Wireless - CA
Reported numbers in 840-279
No numbers in this block have been reported by visitors yet.
What does the 840-279 prefix tell you?
Every North American number is area code + prefix + line. The prefix 840-279 was assigned to Cellco Partnership dba Verizon Wireless - CA on 07/29/2025 for the Ontario exchange. A call from this block usually originates from a Cellco Partnership dba Verizon Wireless - CA customer in or near Ontario, but caller ID can be spoofed to show any number.